USB: gadget: Pass updated src/dest_pipe_index to USB2 controller

Currently transport drivers are not getting src_pipe_idx and dst_pipe_idx
before passing to USB2 controller while queuing endless request. This
results in misconfiguration for USB endpoints for BAM2BAM connection
and causes data transfers fail in RX direction. Hence fix this by getting
src_pipe_idx and dst_pipe_idx from usb_bam driver and pass those values
to USB2 controller as sps parameters.

Change-Id: Iddef13f4de510ced25eb4a2caeb8375b6fef3c24
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>